HIGH-PURITY INTERNAL LINING FOR ELECTRIC FURNACE

PURPOSE: To improve heat insulation of an electric low shaft furnace by forming a lining layer comprising high purity carbon at least on a bottom of a reaction chamber. CONSTITUTION: Three lining layers 1, 6, 7 are formed on a bottom of a reaction chamber 5, and an innermost layer 1 comprises electr...

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Bibliographische Detailangaben
Hauptverfasser:	FURIIDORITSUHIUIRUHERUMU SHIYURUTSUE, BENEDEIKUTO SHIYUTORAAKE, FUUBERUTO AURITSUHI
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE BLASTING CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE FURNACES FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL HEATING KILNS LIGHTING LIME, MAGNESIA MECHANICAL ENGINEERING METALLURGY OPEN SINTERING OR LIKE APPARATUS OVENS REFRACTORIES RETORTS SLAG TREATMENT OF NATURAL STONE WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE: To improve heat insulation of an electric low shaft furnace by forming a lining layer comprising high purity carbon at least on a bottom of a reaction chamber. CONSTITUTION: Three lining layers 1, 6, 7 are formed on a bottom of a reaction chamber 5, and an innermost layer 1 comprises electric graphite block having enough high density to be covered with a dense silicon carbide coated film upon its making contact with a silicon melting solution. The next heat insulation layer 6 comprises graphite grits which has enough safety to support the weight of all loaded articles in time furnace without losing preferable heat insulation. The outermost heat insulation layer 7 comprises carbon black, and a carbon material of the layers 1, 6, 7 contains maximum 0.05 ppm of boron and phosphorus and all ash component of maximum 10 ppm.